Stencil-operating machine



June 2, 1925.

. c. ECKMAN STENCIL OPERATING MACHINE 2 Sheets-Sheet 2 Filed Sept. 15, 1924 Flai lwuentoz Chcwzes -Eclma'rb 3351371118 abme-13,3% l

Fatented June 2, 1925.

unirse STAT cHenLii-s auxiliaires Rosanna PARK, Vnew JERSEY.

smitncrnornnlafrrne MACHINE.

Application'led,September 15, 19241.` Serial No. 737,783.

T @ZZ 107mm t may concern.' V

Be it known that I, @nannies Eoii'itsxn, a citizen ofthe United States, residing` at 310 East Clay Ave., Roselle Park, in the countv of Union and State. of New Jersey, have uinvented a new and useful Stencil- Operating Machine, of which the following` is a speciiication.

My inventionrelates to improvements in stencil operating machines, such as used in the manufacture of signaposters, vfelt pennants, for putting designs on cloth, wood and glass, for stencilling metal plates and for similar work, wherein,sheetsoffpjaper, cardboard or othermateria'l are fed en toa ytableby.hand and a stencil-frame or holder, havingy a suitable stencilor screen secured thereto; at the underside thereof is brought down upon the said sheets'` of paper, card board or other'mat'erial Vto print thereon-a suitable design or picture. N f i j One of the objects of vmy. invention is t o impart a vertical motion to the stencil frame or holder and to keepVV the samein a horizontal positionv when raised', thereby.. afford ing ample roo-m for feeding thepaper'onto the table. Another object of myinvention is to enable the operation of the stencil vframefto be performed by foot power or motor power; instead of by hand power, as is done at present, although my improved machine may also be designed to be operated by hand, if desired. j

Another object of my invention is to design an improved stencil operating machine, which is simple, durable and inexpensive.

Other objects and advantages will hereinafter appear, and parts of my'iinprovement may be used without other parts.

I attain these objects by the stencil operating machine, one form of which is illustrated in the accompanying drawings or by any mechanical equivalent or obvious modification of the same. j In the drawings Fig. '.1 is a plan or to view of my stencil operating machine;

Fig. 2 is a front elevation of the same; and Fig. 3 is an end elevation looking from left to right in Fig. 1.

Fig. 1 is a detail of a clamp for holding down and for adjusting' the position of the rear longitudinal bar of the stencil frame;

and Fig.` 5 is a detail of the connection of t-he front longitudinal bar of the stencil frame tothe top horizontal bar joining the twoA vertical supports of the stencil frame, which are hereinafter more fully described. Similar numerals refer to similar parts throughout the several views. n 11 designates the legs of a table or stationary part of my stencil operatingmalchine for feeding thereon sheets of paper, cardboard andV other material, and 12 the top of the said table; the said legs 11 are joined by a pair of longitudinal braces 13 and by pairs of upper'and lowercross braces .14 and V15 respectively.. Y j.

Each of said crossfbraces isshownashaviing secured theretoa pair of metal'fsockets 16 by means of their flanges 1f, which may be'fastened to said cross bracesby wood screws, bolts or in lany other suitable manner.' l A' l j' The pairs of upper and lower ysockets 16 Yserve as guides .for the vertical rods Vor fplungers 18, torslidetherein; saidrods 18 are shown as having atftheir` ends horizontal 1arnisf19, which :terminate vin flanges 20,

which Vmay be secured to said arms 19 Iin any suitable manner; thevarms 19 A"may be made separate from the said rods 18 and secured thereto by suitable elbows or fittings,

it desired. j n

The rods 1 8iand arms19 may alsobe made "tubular, if desired.

Theflanges 2O 'may be secured to a. pair of supports or movable frames 2122, which V are situated onboth sides of my stencil operating machine; each support is shown in Fig. 3 as consisting of a side bar 21, which is mounted ledgewise thereof on ak vertical vframe 22, which is shown as consisting of three Vertical bars joined at the top thereof by the said side bar 21 and at the bottom thereof by short cross-bars.

The supports may be of any other suitable construction, 'if desired.

The two side bars 21 are joined above the top of the table 12 by the front top bar 23 and the rear top bar 24, the latter of which is secured at its ends and the former of which is detachably `connected to each of said'side bars 21.

The stencil frame is shownV as consisting of the front longitudinal, bar 25, the rear longitudinal bar 26 and the cross bars 27 and 23, which are secured at their ends to said longitudinal bars and 26, transversely thereto.

'Ihe front longitudinal bar 25 ot the stencil frame may be adjustably connected to said front top bar 23 by means ot a pair of detachable hinges 29, each having therein a removable pin -and a cap 31 which may be removably connected to the tail end Vof the pin 30, to keep the same in position, as is shown in Fig. 5.`

The rear longitudinal bar 26 oi the stencil iframe is adjustably Ysecured at its ends to the side bars 21 by means of a pair of vertical screws 49, nuts and clamps 51 which are shown in Fig. 4, one at each end ofthe bar 26; by means of a pair of horizontal screws 52 and heads 53 thebar 26 may be adjusted horizontally, from front to rear, on said side bars 21 before being clamped down as above described.

By means of the above arrangement frames or" different sizes may be` interchangeably mounted on said side bars 21; where the sizes of said frames from front to rear differ considerably, the adjustment may be effected by moving the bars 23 and 25 until the .bar

26 is near the desired position thereof, when the bar 23 may be connected byk a pair of bolts passing therethrough at the ends thereot and through a pair ot openings 48 in the side bars 21; the screw 49 is then passed through one of the seriesof vertical openings 4S, yprovided in the side bars 21, which is nearest. to the bar 26 in `'iront thereof, as shown in Figs. 1 and 4, and the linal adjustment of thev bar 26 is then made b-y the horizontal screws 52 as above described.

To operate the supports 21-22, I provide at the lower ends thereof extensions 32, which are pivotally connected to a pair of operating levers 33 by means of pins 36; the said levers 33 are shown in F ig. 3 as pivotall),y connected to a pair ot rocking links 34 by means of pins Y37, and the links 34 are pivotally connected to the lower cross braces 15 of the table of my machine by means of pins 38.

At their front ends the levers 33 are. shown as having secured thereto the ends ota footV board 35. i

To raise the supports 21-22 with the stencil frame mounted thereon, the opera-tor has to depress the toot board 35, which causes the levers 33 to lift the extension 32 of the side frames 22 of said supports 21-22; the rods 18, sliding in their sockets 16, keep the motion ot the supports vertical and the stencil trame parallel to the table throughout all of its positions; the rocking links 34 take up 'the irregularity of the motion of the levers 33, as may easily be seen from Fig. 3. Y

'Io lower the supports 21-22 with the stencil frame thereon more promptly than may be doneby the weightl thereof, suit-able springs may be provided for the purpose; or they may be lowered mechanically in any suitable manner.

My stencil operating machine may also be driven by a motor or power ifrom any other source; it may also be operated by hand, it desired, instead of by foot.

`To directI the position of the sheets of paper or cardboard, which are fed on to the table under the stencil frame, I provide the movable fingers or registers 42 and 43, respectively at the side and rear of the position of the sheets of material, under the stencil frame, which registers are to move with the Isaid supports and stencil frame` To carry the said registers, I provide the rear beam 39 and the front beam 40, which [nay be secured to the frames 22 at the rear and front thereof, as shown in Fig; 3, also the cross-beam 41, which is mounted on the said beams 39 Land 40, transversely thereto.

. rllhe reai beam 39 has adjustably secured thereto the fingers or registers 43; and the cross beam 41, the fingers or registers 42, by lmeans of the feed-screws 46,v each of which is formed at the upper end of averticalbolt or pin, which passes through a metalcbearing 47, which is provided with flanges, to be secured lto the underside of said beams 39 and 40 5 said 'bolts or pins are provided with collars 44 and which may be secured thereto in any suitable manner;

the collars 44 and 45 are resting on the beams 411 and 39 respectively, and the screws 46 at the ends of said pins are ,in enga-gement with nuts 54, which may be secured to or made in one piece with said registers 42 and 43; the upper ends of said registers pass through slots formed in metal sockets 55, which may be secured to the underside oit the table.

The fingers or registers 42 and 43 are shown in Fig. 1 as rectangular in cross section, to prevent rotation thereof iiiV their sockets 55; but they may have any other suit-able shape, it desired.

By turning said screws 46 in their bearings 47 the nuts 54 with the registers 42 and 43 may be moved upwardly or downwardly,

thereby adjusting the position oit.' the upper ends of said registers. with relation to the Vstencil frame, to allow tor different thick` liesse-s of stencil frames that may be employed and to insure perfect register of the work.

Many changes may be made in the details till 'of the 'same within the scope of my invention. I claim as my invention and desire-to secmie by Letters Patent: 4

l. In a stencil operating machine a table for feeding thereon sheets of material, a

stencil frame, a pair of inovablesnpportsy therefor, situated at theopposite sides of said table and rigidly connected to each other, a means for raising and lowering said supports with said frame thereon, guide rods secured to each of said supports, to move therewith, and a means for keeping the motion of said rods vertical secured to said table, thereby keeping said frame in all positions thereof parallel to said table.

2. In a stencil operating machine a table for feeding thereon sheets of material, a stencil frame, a pair of movable supports therefor, situated at the opposite sides of said 'table and rigidly connected to each other, a means for raising and lowering said supports with said frame thereon into a position parallel to said table to bring said frame down on to said sheets, and registers secured to saidsupports to move therewith each in a straight line to limit the position of said sheets when fed on to said table.

3. In a stencil operating machine a table for feeding thereon sheets of material, a stencil frame, a pair of movable supports therefor, situated at the opposite sides of said table and rigidly connected to each other, a means for raising and lowering said Y supports with said frame thereon into a position parallel to said table, to bring said frame down on to said sheets, registers ad- ]'nstably secured to said supports to move therewith each in ia straight line, to limit the position of said sheets when fed on tosaid tab-le, and a means for adjusting the height of said registers on said supports to correspond to various thicknesses of frames employed on the machine.

ll. In a. stencil operating machine a table for feeding thereon sheets of material, a stencil frame, a pair of movable supports therefor, situated at the opposite sides of said table and rigidly connected to each other, a means for raising and lowering said supports with said frame thereon into a position parallel to said table, to bring said frame down on to said sheets, a means for detachably connecting the front of said frame to said supports and a means for adjustably connecting the rear of said frame to said supports. Y

5. In a stencil operating machinea table for feeding thereon sheets of material, a stencil frame, a pair of movable supports yfor said frame at the opposite sides of said table rigidly connected to each other, guiderods secured to each of said supports,v a means for keeping the motion of said rods vertical, a lever, pivotally connected to one of said supports, to actuate the same, and a rocking link pivotally connected to said table and to said lever, to take up the irregularity of the motion of said lever. Y Y

.6.V In a stencil operating machine a table 'forfeeding thereon sheets ofmaterial, a stencil frame, a pair of movable 4supports therefor, situated at the oppositersides of said table, a rear beam and ak front beam secured at their ends to and'rigidly connecting to each other said supports, a cross beam mounted on the aforementioned beams, transversely thereto, a means for raising andk lowering said supports with said beams and with said frame thereon into a position parallel to said table, to bring said frame said table, a .rear beam and a front beam secured at their ends to and rigidly connecting to each other said supports, a cross-` beam mounted on the aforementioned beams lowering said supports with said beams and with said frame thereon into a position parallel to said table, to bring said frame down on to said sheets, feed screws carried by said rear beam and said cross beam, nuts' engaged by said feed screws and registers adjustably secured by means of said nuts and screws to said rea-r beam and to said cross beam, tomove therewith each in ,a straight line, to limit the posit-ion of said sheets when fed on to ksaid table.

8. In a. stencil operating machine table for feeding thereon sheets of material, a stencil frame, a pair of movable supports therefor, situated at the opposite sides of said table and rigidly connected to each other, a means for raising and lowering said snpports with said frame thereon into a position parallel to said table to bring said frame down on to said sheets, a front top barvdetachably connected at the ends thereof to said supports, transversely thereto,a front longitudinal bar in said frame detaohably connected to said front top bar, a rear longitudinal bar in said frame adjustably 'con-` nected to said supports transversely thereto and cross-bars in said frame, secured at their ends to said longitudinal bars transversely thereto. l

9. In a stencil operating machine a table for feeding thereon sheets of material, Va

stencil frame containing a front longitudinal bar and a rear longitudinal bar, a pair of movable supports 'for said frame, situated oniopposite sides of said table and rigidly connected to each other, a clamp for de-Q `transversely thereto, a means for raising and a taohably connecting said rear longitudinal bar to said supports, a series of vertical openings at the upper edge of each of said supports, vertical screws to pass through said openings for cletaehably Connecting said front longitudinal bar and said volalnp to saiclsupports, horizontal screws for acljnsting the position of said rear longitudinal baron said support before clamping it down thereon, and a means 'for raising and lowering said supports Wit-h said frame thereon into a position parallel to said table, to bring the frame down on to said sheets.

' CHARLES ECKMAN. 

